.tree {
    min-height:20px;
    padding: 0px;
    padding-bottom: 10px;
    background-color: #ffffff;
    border: 1px solid #e6e6e6;
    -webkit-border-radius:4px;
    -moz-border-radius:4px;
    border-radius:4px;
    /*-webkit-box-shadow:inset 0 1px 1px rgba(0, 0, 0, 0.05);*/
    /*-moz-box-shadow:inset 0 1px 1px rgba(0, 0, 0, 0.05);*/
    /*box-shadow:inset 0 1px 1px rgba(0, 0, 0, 0.05);*/
}
.tree li {
    list-style-type:none;
    margin:0;
    padding:10px 5px 0 5px;
    position:relative
}
.tree li::before, .tree li::after {
    content:'';
    left:-20px;
    position:absolute;
    right:auto
}
.tree li::before {
    border-left:1px solid #999;
    bottom:50px;
    height:100%;
    top:0;
    width:1px
}
.tree li::after {
    border-top:1px solid #999;
    height:20px;
    top: 30px;
    width:25px;
}
.tree li span {
    -moz-border-radius:5px;
    -webkit-border-radius:5px;
    border:1px solid #999;
    border-radius:5px;
    display:inline-block;
    padding:3px 8px;
    text-decoration:none
}
.tree li.parent_li>span {
    cursor:pointer
}
.tree>ul>li::before, .tree>ul>li::after {
    border:0
}
.tree li:last-child::before {
    height:30px
}
.tree li.parent_li>span:hover, .tree li.parent_li>span:hover+ul li span {
    background:#eee;
    border:1px solid #94a0b4;
    color:#000
}
.tree ul {
    margin: 0;
}
.tree i {
    margin-left: 2px;
    height: auto;
    word-wrap: break-word;
    word-break: break-all;
    overflow: hidden;
}